Workholder for cutting or dressing machines



:Dct. 23, 1923. 1,471,333

- I H. A. HERR WORKHOLDER FOR CUTTING OR DRESSING MACHINES FiledApril 1. 1922 Patented @ct 23, l923.

HENRY a. Bean, on CHICAGO, ILLINOIS, .assieiq a. so none nrnc rnorrrncorvrrnnx tens OF CHICAGO, ILLINQIS, A CORPQRATION 6F ELLINOISLWORKHOLDEB FOB CUTTING OB DRESSING MACHINES."

Application area ri -n1 i,

T 0 all whom it may concern.

Be it known that I, A. Heinz, a citizen ofthe United States, residing atChicago, in the county of Cook and-State of 'lllinois, have inventedcertain new and useful lmproveinentsin lvorkholders'for Cutting orDressing Machines, of which the following 1s a specification.

This invention relates to improvements in necessary to dress or planedown the back,

This is a very particular operation and must be done with accuracy sothat the plate will set or fit correctly. 1 he dressing down hasheretofore. been don first on what is known as a roughing machine whichplanes off the back but leaves the surface rough, after which the plateis olace'd in a planing or smoothing machine for the finishing operation. f

These machines emhody a reciprocating knife or cutter and co-operatingwith the cutter, in proximity thereto, one or more steel or iron rollershave been employed, and which rollers are of a'length to extend enirelyacross the plate and rest upon the back thereof and roll with respect tothe back during the cutting of the plate. Pressure is exerted upon therollers'so as to force or hold the plate firmly against the bed of themachine.

Inasmuch as t iese rollers are of metal, the bodies thereof do notyield, with the result that in the event that the plate is provided witha high portion, the roller will be tilted or raised by such high portionwhich causes the roller to move out of engagement with other portions ofthe plate, and as the cutting proceeds. the plate will not be heldfirmly, with the result that the plate will slip or move causingconsiderable damage or injury to the plate and often times under theseconditions the plate will be trimmed or planed to an uneven thickness,which is not desirable.

With this construction or'type of machine it heretofore been impossibleto operate 1-922. Serial No. 548,574.

' upon, two plates at the same time which are of, uneven thicknesses,as; the thicker. plate will hold the roller or rollers elevated abovethe thinner plate and the latter will not be held atall by the rollers.

Toovercome these diificulties and objections and to provide animprovedroller attachment for machines of this. character, the

body portion or work engaging surface of which roller is adapted toyield to compensate the irregularities of the surface of the plate to beoperated upon, whereby the roller will under all conditions exert itspressure upon the back of the plate throughout the entire len th orwidth of. the plate, is one. of the objects of the present invention.

ll. further object is to provide an improved roller of this character bymeans of the use of-which two or more plates of unequal tliicknessesmaybe simultaneously dressed r planed and each of the plates will be firmlygripped or forced against the bed of the machine by the roller orrollers.

To theattainn'ient of these end sand the accomplishment of other new anduseful objects as will appear, the invention consists in the featuresofnovelty in substantially the construction, combination and arrangement of the several parts hereinafter more fully described and claimedand shown in the accompanying drawing illustrating this invention and inwhich- Figure l is a perspective view of a portion of a shaving ordressing machine having a roller constructed in accordance with theprinciples of this invention applied thereto. a

l igure 2is a detail vertical sectional View taken online 22, Figure 1.V

igure 3 .is an enlarged detail view in vertical section showing theroller in position.

While this improved roller attachment will be described and claimed inconnection with the dressing or smoothing of the back of electrotypes,it is to be understood that the same can be used with equal efliciencyin the preparing of other forms of printing plates and therefore it isto be understood that this invention is not to be considered as beinglimited in its use withelectro types.

bed having a shoulder or stop 11 at the forer rests upon the o 'i toes 1i, recinroeete upon the machine thoreior, the scope of the rroni thespirit 9; connected therewith a e 1. i 1 e howl 'th the cutter theroller in y be up inOunteC. thereupon QCliLPYQQ ilO be reeiproiieienoyno sated by means or SUlJllJlQ rocks 15. machine of this Chen i'fill ofthese the ordinary and ti the bed for holding 10 well kno common in newrollers may be chines or iirrange o :70 ype suoportniova le over the erest r u LL11 ant; u"

r i atlztp'tecl to engage :i the surtsce of the el otrotype planeoperation of ile the Work I -l w 1 116 roller i u? L '1 .1 A N V oensstethe 1 he had: or sureleetrotype, and means it: so t e otel upon, and nn3 i upon tle said holder for l1 lcl the hung the oleetroty 'ie firmlyupon the food,

at 116 plate or work 10. rtetl upon the roller i so so t he snre againstthe work t l any desired or su abie manner in the 3. in combination, onelect/retype support 'esent iilustrstion however, a spring 19 is 9 bed,:2 cutter ssicl cutter and bed being io'm eneziped within a housing :20,carried no 1 ble over the Work, ssicl cutter and bed the head the normaltendency the inn- 19 being to force the roller against A com 2]. isproricletlfor riising i said eleotrotype holder embodying s 'nble \Yorl;engagin surface to compens of the surreee to be 1 1 e the IU-Qgllltll Ku'etl upon.

the roller against t e stress of the spring i i he is 4 I V V V I p .19,when desired on 1 21 may be 01* adjacent the plane of opei ation orprovided with (liter thereupon, and. means for causing e roller er rtpresure upon the electro 1 ype, the eleotrotype engaging surface of Y nowork Will not only be firnithe roller being yielcleble to compensate theagainst :1e bed but the surface of, irregularities of the surface of theelectroielcl for any irregularities type.

ther portions of the roller In testimony whereof I have signed my ansuitable construe wit 1 the surface or the work, name to thisspecification on this 30th day 7 .o that the Work or plate 12 of March,A. D. 1922. W Tfl n will. be :irinly held fist against the bed 10. lot.A. PilLRit.

